-- @testpoint: opengauss关键字constructor(非保留)，作为函数名，部分测试点合理报错

--关键字不带引号-成功
drop function if exists constructor;
create function constructor(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--关键字带双引号-成功
drop function if exists "constructor";
create function "constructor"(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--关键字带单引号-合理报错
drop function if exists 'constructor';
create function 'constructor'(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--关键字带反引号-合理报错
drop function if exists `constructor`;
create function `constructor`(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--清理环境
drop function if exists constructor;
drop function if exists "constructor";